cardiovascular endurance Flashcards
1
Q
what is diffusion
A
the movement of gas from a high to low concentration
2
Q
what factors assist diffusion
A
.thin walls
large surface area
short diffusion distance
large network of capillaries
3
Q
what is tidal volume
A
normal amount of air inhaled and exhaled per breath
4
Q
what is vital capacity
A
the largest volume of air that can be expired after the deepest inspiration
5
Q
what is residual volume
A
the amount of air left in the lungs after maximal expiration
6
Q
what is gas exchange
A
the movement of oxygen and carbon dioxide between the lungs and blood in the alveoli
7
Q
what are alveoli and where are they found
A
they are small air sacs that are found in the lungs
